Abstract: The present invention relates to a process for working up reaction mixtures containing benzimidazolones of the formula (I) ##STR1## prepared by reacting o-phenylenediamines and urea in a water-insoluble solvent, where in formula (I) R.sup.1, R.sup.2 and R.sup.3 are identical or different and independently of one another are a hydrogen atom, an alkyl, alkoxy or alkylsulfonyl group having in each case 1 to 6 carbon atoms, chlorine, bromine, a substituted or unsubstituted phenyl group, a carboxylic acid, methylcarbonyl, phenylcarbonyl, methoxycarbonyl, carbamoyl, methylcarbamoyl or phenylcarbamoyl group, a hydroxyl group, cyano group or nitro group, by adding a wetting agent and a defoamer to the reaction mixture, distilling off the solvent azeotropically with the addition of water and with stirring and filtering off the benzimidazolone from the aqueous suspension arising.

Abstract: Process for preparing di(3-(2-chloroethylsulfonyl)-1-propyl)amine hydrochloride, byreacting 1 mol of an N,N-diallylcarboxamide of the formula (1)R-CON(CH.sub.2 --CH.dbd.CH.sub.2).sub.2 (1)in which R is hydrogen, alkyl(C.sub.1 -C.sub.6) or cycloalkyl(C.sub.4 -C.sub.8) with about 4 to about 8 mol of mercaptoethanol at temperatures of about 0.degree. to about -70.degree. C. in the presence of pure oxygen or a mixture of oxygen with an inert gas or an inert gas mixture, if appropriate in an inert organic solvent, to give the carboxamide of the formula (2)R--CON(CH.sub.2 --CH.sub.2 --CH.sub.2 --S--CH.sub.2 --CH.sub.2 --OH).sub.2(2)in which R has the abovementioned meaning,hydrolyzing this compound with the aqueous solution of an alkaline agent at temperatures of about 40.degree. to about 120.degree. C.

Abstract: Process for the preparation of 3'-aminopropyl 2-sulfatoethyl sulfone in high yield, which comprises reacting allylamine with mercaptoethanol in aqueous sulfuric acid in a one-pot process at temperatures from about 25.degree. C. to the boiling point of the reaction mixture in the presence of free-radical initiators which are soluble in the reaction medium, oxidizing the reaction mixture thus obtained with hydrogen peroxide in the presence of catalytic amounts of a compound of a transition metal of the periodic table of elements as oxidation catalyst to give 3'-aminopropyl 2-hydroxyethyl sulfone hemisulfate, adding further sulfuric acid until the total amount of sulfuric acid in the mixture is at least 1 mol, relative to the allylamine used, and esterifying the 3'-aminopropyl 2-hydroxyethyl sulfone hemisulfate obtained after oxidation by evaporation to dryness or with sulfuric acid or oleum or chlorosulfonic acid in solution.

Abstract: In a method for preparing 3'aminopropyl-2-sulphatoethylsulphone in a one-pot process, allyl amine is reacted with mercaptoethanol in dilute sulphuric acid at temperatures of approximately 50.degree. C. up to the boiling point in the presence of a radical starter. The resultant reaction mixture is oxidized with hydrogen peroxide, in the presence of catalytic quantities of a compound of a transition metal of the periodic system of the elements as an oxidation catalyst, at temperatures of approximately 70 to 100.degree.C. and evaporated to dryness after addition of sufficient sulphuric acid to bring the total sulphuric acid content of the mixture to at least 1 mol, referred to the quantity of allyl amine used.

Abstract: The invention relates to N-acyl-aminoalkyl-2-hydroxyethylsulfides of formula R--CONH--(CH.sub.2).sub.n --S--CH.sub.2 --CH.sub.2 --OH, where R is a hydrogen atom or a (C.sub.1 -C.sub.4) alkyl group and n is an integer between 3 and 6, and to a method for preparing them. The method consists in reacting compounds of formula R--CONH--(CH.sub.2).sub.m --CH.dbd.CH.sub.2, where R has the above-mentioned meaning and m is an integer between 1 and 4, with the equivalent quantity of mercaptoethanol at approximately 15.degree. to approximately 150.degree. C. in the presence of a radical starter and in the presence or in the absence of a solvent which is inert to the reactants and to radical reactions.

Abstract: A process for the preparation of 3'-aminopropyl 2-chloro- ethyl sulfone semisulfate in very good yield and high purity, by reacting allylamine with mercaptoethanol in a one-pot process in about 0.5 to about 0.6 mol of dilute sulfuric acid, relative to allylamine, at temperatures of about 0.degree. C. up to the boiling point of the reaction mixture in the presence of a free-radical initiator, introducing 2.0 to about 2.5 mol of chlorine into the resultant reaction mixture at temperatures of about 0.degree. C. to about 100.degree. C. and then concentrating the mixture obtained to dryness.